001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.hbase.chaos.factories;
020
021import org.apache.hadoop.hbase.chaos.actions.Action;
022import org.apache.hadoop.hbase.chaos.actions.CorruptDataFilesAction;
023import org.apache.hadoop.hbase.chaos.actions.DeleteDataFilesAction;
024import org.apache.hadoop.hbase.chaos.actions.DumpClusterStatusAction;
025import org.apache.hadoop.hbase.chaos.monkies.ChaosMonkey;
026import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
027import org.apache.hadoop.hbase.chaos.policies.PeriodicRandomActionPolicy;
028
029/**
030 * A chaos monkey to delete and corrupt regionserver data, requires a user with
031 * passwordless ssh access to the cluster and sudo privileges.
032 * Highly destructive
033 */
034public class DataIssuesMonkeyFactory extends MonkeyFactory {
035
036  private long action1Period;
037  private long action2Period;
038
039  private float chanceToAct;
040
041  @Override
042  public ChaosMonkey build() {
043    loadProperties();
044
045    // Highly destructive actions to mess things around.
046    Action[] actions1 = new Action[] {
047      new DeleteDataFilesAction(chanceToAct),
048      new CorruptDataFilesAction(chanceToAct)
049    };
050
051    // Action to log more info for debugging
052    Action[] actions2 = new Action[] {
053      new DumpClusterStatusAction()
054    };
055
056    return new PolicyBasedChaosMonkey(properties, util,
057      new PeriodicRandomActionPolicy(action1Period, actions1),
058      new PeriodicRandomActionPolicy(action2Period, actions2));
059  }
060
061  private void loadProperties() {
062    action1Period = Long.parseLong(this.properties.getProperty(
063      MonkeyConstants.PERIODIC_ACTION1_PERIOD,
064      MonkeyConstants.DEFAULT_PERIODIC_ACTION1_PERIOD + ""));
065    action2Period = Long.parseLong(this.properties.getProperty(
066      MonkeyConstants.PERIODIC_ACTION2_PERIOD,
067      MonkeyConstants.DEFAULT_PERIODIC_ACTION2_PERIOD + ""));
068    chanceToAct = Float.parseFloat(this.properties.getProperty(
069        MonkeyConstants.DATA_ISSUE_CHANCE,
070        MonkeyConstants.DEFAULT_DATA_ISSUE_CHANCE+ ""));
071  }
072}